AN AUTOMATIC PARKING COUPON

摘要

A timer comprising a lamination containing a piece of porous wick material (1), and a reservoir of liquid (6), said liquid (6) and/or said porous wick (1) being such that when the reservoir is opened and the liquid (6) released it soaks into the porous wick (1) to thereby create a visible trace of the liquid on or in the porous wick; a face part (2) of the lamination being transparent such that said visible trace can be seen; said wick material (1) having imposed thereon or positioned adjacent thereto a series of markings which cover the time range over which the timer is to be used. The invention also provides a method of manufacturing the timer.